Tag: LCD

When I recently received my new Asus PB248Q monitor, I searched the internet for a Linux tool to test the new monitor quickly for dead pixels. The only piece of software I found was monitest, which is not available in recent Ubuntu versions. After reading another post, I soon realized that it is fairly easy to set up a LCD dead pixel test on my own by creating four bitmaps, each single colored in red, green, blue and white, resp. Viewing the images in fullscreen mode in a web browser or an image viewer such as geeqie lets you check the pixels of your monitor. Failed pixels will occur as black dots in the test images.

For the sake of simplicity, I provide the four test images in 1920×1200 resolution here for use and free download.

One after another, click on the images to view them unscaled. Switching your browser into fullscreen mode (e.g. by pressing F11) will let you check your LCD monitor for dead pixels from withing your browser.